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You're going to need a mapping for your launchpad if you're trying to use it within traktor. Luckily, you're in the best place to find that, just check out the midi mappings portion of the site and find whichever one works best for you. I imagine this is what you meant when you wanted to integrate it into your existing DJ setup.

If you're trying to use the launchpad within Ableton Live, that's even easier since it's just plug and play. Just load up a drum rack and start hammering away.

In the off chance you're trying to play with the launchpad in Ableton while midi synced to traktor, read this closely: http://blog.dubspot.com/syncing-ableton-live-traktor/
Once you have the two programs synced, you just plug the Launchpad into Ableton, and use it as normal.